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iommu/iommu-debug: Add support for secure domain profiling

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Secure domains do different amounts of work than non-secure domains, so
we need to be able to profile them separately.  Add another debugfs
file, "secure_profiling", that does the same thing as the "profiling"
file.

Change-Id: I6968036bfdcc63449f27336771b3956a2b7754f6
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
This commit is contained in:
Mitchel Humpherys 2015-10-02 16:02:31 -07:00 • committed by David Keitel
parent e2dc9b3652
commit 88a510ad7c
1 changed files with 44 additions and 2 deletions
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46
drivers/iommu/iommu-debug.c
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@ -424,7 +424,8 @@ static const char * const _size_to_string(unsigned long size)
return "unknown size, please add to _size_to_string"; return "unknown size, please add to _size_to_string";
} }
static void iommu_debug_device_profiling(struct seq_file *s, struct device *dev) static void iommu_debug_device_profiling(struct seq_file *s, struct device *dev,
bool secure)
{ {
unsigned long sizes[] = { SZ_4K, SZ_64K, SZ_2M, SZ_1M * 12, unsigned long sizes[] = { SZ_4K, SZ_64K, SZ_2M, SZ_1M * 12,
SZ_1M * 20, 0 }; SZ_1M * 20, 0 };
@ -458,6 +459,17 @@ static void iommu_debug_device_profiling(struct seq_file *s, struct device *dev)
goto out_domain_free; goto out_domain_free;
} }
if (secure) {
int secure_vmid = VMID_CP_PIXEL;
if (iommu_domain_set_attr(domain, DOMAIN_ATTR_SECURE_VMID,
&secure_vmid)) {
seq_printf(s, "Couldn't set secure vmid to %d\n",
secure_vmid);
goto out_domain_free;
}
}
if (iommu_attach_device(domain, dev)) { if (iommu_attach_device(domain, dev)) {
seq_puts(s, seq_puts(s,
"Couldn't attach new domain to device. Is it already attached?\n"); "Couldn't attach new domain to device. Is it already attached?\n");
@ -551,7 +563,7 @@ static int iommu_debug_profiling_show(struct seq_file *s, void *ignored)
{ {
struct iommu_debug_device *ddev = s->private; struct iommu_debug_device *ddev = s->private;
iommu_debug_device_profiling(s, ddev->dev); iommu_debug_device_profiling(s, ddev->dev, false);
return 0; return 0;
} }
@ -568,6 +580,29 @@ static const struct file_operations iommu_debug_profiling_fops = {
.release = single_release, .release = single_release,
}; };
static int iommu_debug_secure_profiling_show(struct seq_file *s, void *ignored)
{
struct iommu_debug_device *ddev = s->private;
iommu_debug_device_profiling(s, ddev->dev, true);
return 0;
}
static int iommu_debug_secure_profiling_open(struct inode *inode,
struct file *file)
{
return single_open(file, iommu_debug_secure_profiling_show,
inode->i_private);
}
static const struct file_operations iommu_debug_secure_profiling_fops = {
.open = iommu_debug_secure_profiling_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int iommu_debug_attach_do_attach(struct iommu_debug_device *ddev, static int iommu_debug_attach_do_attach(struct iommu_debug_device *ddev,
int val, bool is_secure) int val, bool is_secure)
{ {
@ -946,6 +981,13 @@ static int snarf_iommu_devices(struct device *dev, const char *name)
goto err_rmdir; goto err_rmdir;
} }
if (!debugfs_create_file("secure_profiling", S_IRUSR, dir, ddev,
&iommu_debug_secure_profiling_fops)) {
pr_err("Couldn't create iommu/devices/%s/secure_profiling debugfs file\n",
name);
goto err_rmdir;
}
if (!debugfs_create_file("attach", S_IRUSR, dir, ddev, if (!debugfs_create_file("attach", S_IRUSR, dir, ddev,
&iommu_debug_attach_fops)) { &iommu_debug_attach_fops)) {
pr_err("Couldn't create iommu/devices/%s/attach debugfs file\n", pr_err("Couldn't create iommu/devices/%s/attach debugfs file\n",